Dr. Hagen joined OSU-Cascades from Colorado State University (CSU) where he was an assistant research professor in the Department of Mechanical Engineering.

Prior to joining the faculty at CSU, Dr. Hagen was a lead research engineer at the Chevron Energy Technology company where he investigated novel fuels for advanced internal combustion engines. His previous industry experience also includes working as an application engineer for Woodward, Inc., a global energy system solution provider.